1.2k citations · 5.5k across the 77 of their papers we have counts for
77 papers
The MegaWave Radio Surveyor
T. Joseph W. Lazio, Evgenya Shkolnik, James Aguirre +40
Several Decadal-level questions in astrophysics, exoplanets, astrobiology, and cosmology can be addressed only at low radio frequencies inaccessible from Earth. The MegaWave Radio…
Separating Dark Acoustic Oscillations from Astrophysics at Cosmic Dawn
Jo Verwohlt, Charlotte A. Mason, Julian B. Muñoz +3
The formation redshift and abundance of the first stars and galaxies is highly sensitive to the build up of low mass dark matter halos as well as astrophysical feedback effects whi…
Birth of the first stars amidst decaying and annihilating dark matter
Wenzer Qin, Julian B. Munoz, Hongwan Liu +1
The first stars are expected to form through molecular-hydrogen (H) cooling, a channel that is especially sensitive to the thermal and ionization state of gas, and can thus act…
Breaking degeneracies in the first galaxies with clustering
Julian B. Muñoz, Jordan Mirocha, Steven Furlanetto +1
The high-redshift galaxy UV luminosity function (UVLF) has become essential for understanding the formation and evolution of the first galaxies. Yet, UVLFs only measure galaxy abun…
Insights from HST into Ultra-Massive Galaxies and Early-Universe Cosmology
Nashwan Sabti, Julian B. Muñoz, Marc Kamionkowski
The early-science observations made by the James Webb Space Telescope (JWST) have revealed an excess of ultra-massive galaxy candidates that appear to challenge the standard cosmol…
Detecting and Characterizing Young Quasars. III. The Impact of Gravitational Lensing Magnification
Minghao Yue, Anna-Christina Eilers, Robert A. Simcoe +8
We test the impact of gravitational lensing on the lifetime estimates of seven high-redshift quasars at redshift . The targeted quasars are identified by their small obs…
An Effective Model for the Cosmic-Dawn 21-cm Signal
Julian B. Muñoz
The 21-cm signal holds the key to understanding the first structure formation during cosmic dawn. Theoretical progress over the last decade has focused on simulations of this signa…
Non-parametric Lagrangian biasing from the insights of neural nets
Xiaohan Wu, Julian B. Munoz, Daniel J. Eisenstein
We present a Lagrangian model of galaxy clustering bias in which we train a neural net using the local properties of the smoothed initial density field to predict the late-time mas…
21cmfish: Fisher-matrix framework for fast parameter forecasts from the cosmic 21-cm signal
Charlotte A. Mason, Julian B. Muñoz, Bradley Greig +2
The 21-cm signal from neutral hydrogen in the early universe will provide unprecedented information about the first stars and galaxies. Extracting this information, however, requir…
Improved Constraints on the 21 cm EoR Power Spectrum and the X-Ray Heating of the IGM with HERA Phase I Observations
The HERA Collaboration, Zara Abdurashidova, Tyrone Adams +92
We report the most sensitive upper limits to date on the 21 cm epoch of reionization power spectrum using 94 nights of observing with Phase I of the Hydrogen Epoch of Reionization…
Report of the Topical Group on Cosmic Probes of Dark Matter for Snowmass 2021
Alex Drlica-Wagner, Chanda Prescod-Weinstein, Hai-Bo Yu +37
Cosmological and astrophysical observations currently provide the only robust, positive evidence for dark matter. Cosmic probes of dark matter, which seek to determine the fundamen…
Swampland Bounds on Dark Sectors
Miguel Montero, Julian B. Muñoz, Georges Obied
We use Swampland principles to theoretically disfavor regions of the parameter space of dark matter and other darkly charged particles that may exist. The Festina Lente bound, the…
The Physics of Light Relics
Cora Dvorkin, Joel Meyers, Peter Adshead +19
Many well-motivated extensions of the Standard Model predict the existence of new light species that may have been produced in the early universe. Prominent examples include axions…
Snowmass2021 Computational Frontier White Paper: Cosmological Simulations and Modeling
Marcelo A. Alvarez, Arka Banerjee, Simon Birrer +9
Powerful new observational facilities will come online over the next decade, enabling a number of discovery opportunities in the "Cosmic Frontier", which targets understanding of t…
Astrophysical and Cosmological Probes of Dark Matter
Kimberly K. Boddy, Mariangela Lisanti, Samuel D. McDermott +16
While astrophysical and cosmological probes provide a remarkably precise and consistent picture of the quantity and general properties of dark matter, its fundamental nature remain…
Snowmass2021 CMB-HD White Paper
HD Collaboration, Simone Aiola, Yashar Akrami +61
CMB-HD is a proposed millimeter-wave survey over half the sky that would be ultra-deep (0.5 uK-arcmin) and have unprecedented resolution (15 arcseconds at 150 GHz). Such a survey w…
Snowmass2021 Cosmic Frontier White Paper:Primordial Black Hole Dark Matter
Simeon Bird, Andrea Albert, Will Dawson +13
Primordial Black Holes (PBHs) are a viable candidate to comprise some or all of the dark matter and provide a unique window into the high-energy physics of the early universe. This…
Snowmass2021 Cosmic Frontier White Paper: Dark Matter Physics from Halo Measurements
Keith Bechtol, Simon Birrer, Francis-Yan Cyr-Racine +41
The non-linear process of cosmic structure formation produces gravitationally bound overdensities of dark matter known as halos. The abundances, density profiles, ellipticities, an…
A galaxy-free phenomenological model for the 21-cm power spectrum during reionization
Jordan Mirocha, Julian B. Muñoz, Steven R. Furlanetto +2
Upper limits from the current generation of interferometers targeting the 21-cm signal from high redshifts have recently begun to rule out physically realistic, though still extrem…
The Impact of the First Galaxies on Cosmic Dawn and Reionization
Julian B. Muñoz, Yuxiang Qin, Andrei Mesinger +3
The formation of the first galaxies during cosmic dawn and reionization (at redshifts ), triggered the last major phase transition of our universe, as hydrogen evolved from…
GALLUMI: A Galaxy Luminosity Function Pipeline for Cosmology and Astrophysics
Nashwan Sabti, Julian B. Muñoz, Diego Blas
Observations of high-redshift galaxies have provided us with a rich tool to study the physics at play during the epoch of reionisation. The luminosity function (LF) of these object…
New Roads to the Small-Scale Universe: Measurements of the Clustering of Matter with the High-Redshift UV Galaxy Luminosity Function
Nashwan Sabti, Julian B. Muñoz, Diego Blas
The epochs of cosmic dawn and reionisation present promising avenues for understanding the role of dark matter (DM) in our cosmos. The first galaxies that populated the Universe du…
A fully Lagrangian, non-parametric bias model for dark-matter halos
Xiaohan Wu, Julian B. Munoz, Daniel Eisenstein
We present a non-parametric Lagrangian biasing model and fit the ratio of the halo and mass densities at the field level using the mass-weighted halo field in the AbacusSummit simu…
HERA Phase I Limits on the Cosmic 21-cm Signal: Constraints on Astrophysics and Cosmology During the Epoch of Reionization
The HERA Collaboration, Zara Abdurashidova, James E. Aguirre +81
Recently, the Hydrogen Epoch of Reionization Array (HERA) collaboration has produced the experiment's first upper limits on the power spectrum of 21-cm fluctuations at z~8 and 10.…